A successful microblowing strategy for airfoils

Zohary, Aideal Czar and Asrar, Waqar and Aldheeb, Mohammed (2023) A successful microblowing strategy for airfoils. Progress in Computational Fluid Dynamics, 23 (3). pp. 131-145. ISSN 1468-4349 E-ISSN 1741-5233

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Abstract

This paper presents a successful microblowing technique (MBT) strategy for airfoils in subsonic flows, reducing both components of drag. Critical pressure distribution points on the airfoil are identified acting to aid in the airfoil selection process and prior determination of the blowing region. It effectively addresses the alteration of pressure distribution and hence the pressure drag caused by microblowing. Evidence through numerical simulation on a S1223 airfoil resulted in an improvement to its lift-to-drag ratio by 30% with a relatively strong blowing fraction of 5% when operating at 2° angle of attack and Reynolds number of 1 × 106. Drop in skin friction reached almost 5% while reduction in pressure drag is about 37.5% across a range of angles of attack. Applying MBT on the pressure side of concave trailing edge airfoils where blowing is positioned on the second critical point should produce significant improvement in their aerodynamic performance.

Item Type:	Article (Journal)
Uncontrolled Keywords:	active flow control; microblowing technique; MBT; airfoil; RANS; UAV.
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL1 Motor vehicles T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500 Aeronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechatronics Engineering Kulliyyah of Engineering
Depositing User:	Dr Mohammed Aldheeb
Date Deposited:	09 Jan 2024 08:56
Last Modified:	09 Jan 2024 09:10
URI:	http://irep.iium.edu.my/id/eprint/109763

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